Ivy randomly surveys students in her school to learn about mobile phone password use. of 25 respondents, 14 use a password. based on ivy’s data, how many of the 275 students in her school would be expected to use a password?

154

Step-by-step explanation:

Given : Of 25 respondents, 14 use a password.

To Find: Based on Ivy’s data, how many of the 275 students in her school would be expected to use a password?

Solution:

Let x be the no. of respondents out of 275 who use password

So, A.T.Q

Hence 154 of the 275 students in her school would be expected to use a password

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

34

step-by-step explanation: